Notability app for iPad

This incredibly versatile app let's you add photos and audio recordings and allows you to mark up PDFs. More for note-taking than art making, it keeps the colors and pen options simple. The feature that really sets it apart for us is the adjustable palm resting area.

Muji Funny Face stamp set

Add some personality to your sketch notes with these stamps from Muji. The great thing about this set is that only two or three of the stamps are immediately recognizable as parts of a face, so you can use this same set to improvise arrows, patterns and bullets.